rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P16796 (detected by 1, t=10503 jiffies, g=66257, q=278695) task:syz.0.12253 state:R running task stack:26560 pid:16796 ppid: 16231 flags:0x0000400c Call Trace: